/* RO Structural Studio. Colors, radius and theme come from the admin settings via CSS variables. */

.ross, .ross * { box-sizing: border-box; }

.ross {
	--ross-primary: #07569a;
	--ross-accent: #22a8ab;
	--ross-ok: #2e9e6b;
	--ross-warn: #d99a12;
	--ross-danger: #d64545;
	--ross-radius: 14px;
	--ross-bg: #f3f6fa;
	--ross-surface: #ffffff;
	--ross-text: #14202e;
	--ross-link: var(--ross-primary);
	--ross-muted: #5b6b7d;
	--ross-border: #d9e2ec;
	--ross-muted: color-mix(in srgb, var(--ross-text) 62%, var(--ross-surface));
	--ross-border: color-mix(in srgb, var(--ross-text) 14%, transparent);
	--ross-field: color-mix(in srgb, var(--ross-text) 4%, var(--ross-surface));

	position: relative;
	margin: 0 auto;
	max-width: 1360px;
	padding: 22px;
	color: var(--ross-text);
	background: var(--ross-bg);
	border-radius: calc(var(--ross-radius) + 4px);
	font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
	font-size: 15px;
	line-height: 1.5;
}

.ross h2, .ross h3, .ross h4, .ross p, .ross ul { margin: 0; padding: 0; }
.ross a { color: var(--ross-link); }
.ross .screen-reader-text { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); border: 0; white-space: nowrap; }
.ross [hidden] { display: none !important; }

/* ------------------------------------------------------------------ Cards */

.ross-card { background: var(--ross-surface); border: 1px solid var(--ross-border); border-radius: var(--ross-radius); padding: 18px; }

.ross[data-card="sharp"] .ross-card { border: 1.5px solid color-mix(in srgb, var(--ross-primary) 55%, transparent); border-radius: min(var(--ross-radius), 4px); }
.ross[data-card="elevated"] .ross-card { border-color: transparent; box-shadow: 0 8px 24px -10px color-mix(in srgb, var(--ross-primary) 45%, transparent), 0 1px 3px color-mix(in srgb, var(--ross-text) 12%, transparent); }
.ross[data-card="flat"] .ross-card { border-color: transparent; background: color-mix(in srgb, var(--ross-primary) 6%, var(--ross-surface)); border-radius: min(var(--ross-radius), 6px); }
.ross[data-card="glass"] { background: linear-gradient(135deg, color-mix(in srgb, var(--ross-primary) 22%, var(--ross-bg)), color-mix(in srgb, var(--ross-accent) 22%, var(--ross-bg))); }
.ross[data-card="glass"] .ross-card { background: color-mix(in srgb, var(--ross-surface) 62%, transparent); border-color: color-mix(in srgb, var(--ross-surface) 70%, transparent); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }

/* ----------------------------------------------------------------- Header */

.ross-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.ross-brand { display: flex; align-items: center; gap: 14px; min-width: 0; }
.ross-mark { display: inline-flex; align-items: center; justify-content: center; width: 52px; height: 52px; flex: none; color: #fff; background: linear-gradient(135deg, var(--ross-primary), var(--ross-accent)); border-radius: calc(var(--ross-radius) * .8); overflow: hidden; }
.ross-mark img { width: 100%; height: 100%; object-fit: contain; background: #fff; padding: 6px; }
.ross-title { font-size: 24px; line-height: 1.2; font-weight: 700; letter-spacing: -.01em; color: var(--ross-text); }
.ross-subtitle { color: var(--ross-muted); font-size: 14px; }
.ross-desc { margin: 14px 0 0; max-width: 72ch; color: var(--ross-muted); }

/* ---------------------------------------------------------------- Buttons */

.ross-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 38px; padding: 0 16px; font: inherit; font-weight: 600; font-size: 14px; color: var(--ross-text); background: var(--ross-surface); border: 1px solid var(--ross-border); border-radius: calc(var(--ross-radius) * .7); cursor: pointer; transition: background-color .15s, border-color .15s; }
.ross-btn:hover { border-color: var(--ross-primary); }
.ross-btn--primary { color: #fff; background: var(--ross-primary); border-color: var(--ross-primary); }
.ross-btn--primary:hover { background: color-mix(in srgb, var(--ross-primary) 85%, #000); }
.ross-btn--ghost { background: transparent; }
.ross-btn--sm { min-height: 30px; padding: 0 10px; font-size: 13px; }
.ross-btn--danger { color: var(--ross-danger); }
.ross-btn[disabled] { opacity: .5; cursor: not-allowed; }
.ross button:focus-visible, .ross select:focus-visible, .ross input:focus-visible, .ross textarea:focus-visible, .ross a:focus-visible { outline: 2px solid var(--ross-accent); outline-offset: 2px; }

/* -------------------------------------------------------------- Control bar */

.ross-bar { margin-top: 18px; display: flex; flex-wrap: wrap; align-items: flex-end; gap: 14px 18px; padding: 14px 18px; }
.ross-field { display: flex; flex-direction: column; gap: 4px; min-width: 190px; }
.ross-field > label, .ross-fields label { font-size: 13px; font-weight: 600; color: var(--ross-muted); }
.ross-row { display: flex; gap: 6px; }
.ross-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-left: auto; }
.ross-export { display: inline-flex; gap: 6px; }
.ross-guest { align-self: center; color: var(--ross-muted); }
.ross-status { flex-basis: 100%; min-height: 1.2em; font-size: 13px; color: var(--ross-muted); }
.ross-status.is-dirty { color: var(--ross-warn); }

.ross select, .ross input[type="text"], .ross input[type="number"], .ross textarea {
	width: 100%; min-height: 38px; padding: 6px 10px; font: inherit; font-size: 14px; color: var(--ross-text);
	background: var(--ross-field); border: 1px solid var(--ross-border); border-radius: calc(var(--ross-radius) * .6);
}
.ross select { width: auto; min-width: 150px; max-width: 100%; }
.ross-field select { width: 100%; }
.ross-export select { min-width: 90px; }
.ross textarea { min-height: 76px; resize: vertical; }

/* -------------------------------------------------------------- Workspace */

.ross-work { display: grid; grid-template-columns: 200px minmax(0, 1fr) 350px; gap: 16px; align-items: start; margin-top: 16px; }

.ross-rail { display: flex; flex-direction: column; gap: 4px; padding: 10px; position: sticky; top: 16px; }
.ross-mod { display: flex; align-items: center; gap: 10px; width: 100%; padding: 10px 12px; font: inherit; font-size: 14px; font-weight: 600; text-align: left; color: var(--ross-text); background: transparent; border: 0; border-radius: calc(var(--ross-radius) * .6); cursor: pointer; }
.ross-mod:hover { background: var(--ross-field); }
.ross-mod[aria-current="true"] { color: #fff; background: var(--ross-primary); }
.ross-dot { width: 10px; height: 10px; flex: none; border-radius: 50%; background: var(--ross-border); box-shadow: 0 0 0 2px color-mix(in srgb, var(--ross-surface) 80%, transparent); }
.ross-dot.is-ok { background: var(--ross-ok); }
.ross-dot.is-warn { background: var(--ross-warn); }
.ross-dot.is-fail { background: var(--ross-danger); }

.ross-main { display: flex; flex-direction: column; gap: 16px; min-width: 0; }
.ross-form h3, .ross-history h3, .ross-diagram h3 { font-size: 17px; font-weight: 700; color: var(--ross-text); }
.ross-hint { margin-top: 2px; color: var(--ross-muted); font-size: 14px; max-width: 70ch; }
.ross-fields { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px 18px; margin-top: 16px; }
.ross-fields > div { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.ross-input { position: relative; }
.ross-input input { padding-right: 52px; }
.ross-unit { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); font-size: 12px; color: var(--ross-muted); pointer-events: none; }

/* ---------------------------------------------------------------- Diagram */

.ross-svg { display: block; width: 100%; max-height: 340px; margin-top: 10px; }
.ross-svg .plate { fill: color-mix(in srgb, var(--ross-text) 7%, var(--ross-surface)); stroke: color-mix(in srgb, var(--ross-text) 55%, transparent); stroke-width: 1.5; }
.ross-svg .hole { fill: var(--ross-surface); stroke: color-mix(in srgb, var(--ross-text) 55%, transparent); stroke-width: 1; }
.ross-svg .dim { stroke: var(--ross-muted); stroke-width: 1; fill: none; }
.ross-svg text { fill: var(--ross-muted); font-size: 11px; font-family: inherit; }
.ross-svg .strong { fill: var(--ross-text); font-weight: 600; font-size: 12px; }
.ross-svg .u-ok { fill: var(--ross-ok); stroke: var(--ross-ok); }
.ross-svg .u-warn { fill: var(--ross-warn); stroke: var(--ross-warn); }
.ross-svg .u-fail { fill: var(--ross-danger); stroke: var(--ross-danger); }
.ross-svg .weld.u-ok, .ross-svg .weld.u-warn, .ross-svg .weld.u-fail { fill: none; stroke-width: 6; stroke-linecap: round; }
.ross-svg .arrow { stroke: var(--ross-primary); stroke-width: 2.5; fill: none; }
.ross-svg .arrowhead { fill: var(--ross-primary); stroke: none; }
.ross-svg .section { fill-opacity: .85; stroke-width: 0; }

/* ---------------------------------------------------------------- Results */

.ross-side { padding: 0; overflow: hidden; }
.ross-banner { display: flex; align-items: center; gap: 12px; padding: 16px 18px; color: #fff; background: var(--ross-ok); }
.ross-banner.is-fail { background: var(--ross-danger); }
.ross-banner strong { display: block; font-size: 16px; }
.ross-banner span { font-size: 13px; opacity: .92; }
.ross-banner .ross-big { margin-left: auto; font-size: 26px; font-weight: 700; font-variant-numeric: tabular-nums; }
.ross-res-body { padding: 8px 18px 18px; }
.ross-res-mod { padding-top: 14px; }
.ross-res-mod + .ross-res-mod { margin-top: 6px; border-top: 1px solid var(--ross-border); }
.ross-res-head { display: flex; align-items: center; gap: 8px; width: 100%; padding: 0; font: inherit; font-size: 15px; font-weight: 700; text-align: left; color: var(--ross-text); background: none; border: 0; cursor: pointer; }
.ross-check { margin-top: 10px; }
.ross-check-top { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; font-size: 13.5px; }
.ross-check-name { font-weight: 600; }
.ross-check-val { color: var(--ross-muted); font-size: 12.5px; font-variant-numeric: tabular-nums; }
.ross-meter { display: flex; align-items: center; gap: 8px; margin-top: 4px; }
.ross-track { position: relative; flex: 1; height: 8px; background: var(--ross-field); border: 1px solid var(--ross-border); border-radius: 6px; overflow: hidden; }
.ross-fill { position: absolute; inset: 0 auto 0 0; background: var(--ross-ok); border-radius: 6px; }
.ross-track.is-warn .ross-fill { background: var(--ross-warn); }
.ross-track.is-fail .ross-fill { background: var(--ross-danger); }
.ross-pct { width: 48px; text-align: right; font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; }
.ross-pill { display: inline-block; min-width: 38px; padding: 0 8px; font-size: 12px; font-weight: 700; text-align: center; color: #fff; background: var(--ross-ok); border-radius: 10px; }
.ross-pill.is-fail { background: var(--ross-danger); }
.ross-note { margin-top: 3px; font-size: 12.5px; color: var(--ross-muted); }
.ross-derived { margin-top: 10px; display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; font-size: 12.5px; color: var(--ross-muted); }
.ross-derived dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; color: var(--ross-text); }
.ross-derived dt { margin: 0; }
.ross-overview { padding: 14px 18px 18px; }
.ross-overview h4 { font-size: 15px; }
.ross-empty { padding: 18px; color: var(--ross-muted); }

/* ----------------------------------------------------------------- History */

.ross-history { margin-top: 16px; }
.ross-table-wrap { margin-top: 10px; overflow-x: auto; }
.ross-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.ross-table th { padding: 8px 10px; text-align: left; font-weight: 600; color: var(--ross-muted); border-bottom: 1px solid var(--ross-border); white-space: nowrap; }
.ross-table td { padding: 10px; vertical-align: middle; border-bottom: 1px solid var(--ross-border); }
.ross-table tr.is-current td { background: color-mix(in srgb, var(--ross-primary) 8%, transparent); }
.ross-table .ross-acts { display: flex; flex-wrap: wrap; gap: 6px; }
.ross-note-cell { max-width: 28ch; color: var(--ross-muted); }

.ross-disclaimer { margin-top: 16px; max-width: 90ch; font-size: 13px; color: var(--ross-muted); }
.ross-footer { margin-top: 12px; text-align: center; font-size: 13px; color: var(--ross-muted); }

/* ----------------------------------------------------------- Dialog, toast */

.ross-dialog { width: min(440px, calc(100vw - 32px)); padding: 22px; color: var(--ross-text); background: var(--ross-surface); border: 1px solid var(--ross-border); border-radius: var(--ross-radius); box-shadow: 0 24px 60px rgba(0, 0, 0, .35); }
.ross-dialog::backdrop { background: rgba(8, 16, 26, .55); }
.ross-dialog h3 { font-size: 18px; margin-bottom: 12px; }
.ross-dialog form > div { margin-bottom: 12px; }
.ross-dialog label { display: block; margin-bottom: 4px; font-size: 13px; font-weight: 600; color: var(--ross-muted); }
.ross-dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }

.ross-toast { position: fixed; left: 50%; bottom: 24px; z-index: 99999; max-width: min(520px, calc(100vw - 32px)); padding: 10px 18px; color: #fff; font-size: 14px; background: #14202e; border-radius: 10px; transform: translate(-50%, 24px); opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; }
.ross-toast.is-on { opacity: 1; transform: translate(-50%, 0); }
.ross-toast.is-error { background: var(--ross-danger); }

/* ------------------------------------------------------------- Responsive */

@media (max-width: 1100px) {
	.ross-work { grid-template-columns: 190px minmax(0, 1fr); }
	.ross-side { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
	.ross { padding: 14px; }
	.ross-work { grid-template-columns: minmax(0, 1fr); }
	.ross-rail { position: static; flex-direction: row; overflow-x: auto; padding: 6px; }
	.ross-mod { width: auto; white-space: nowrap; }
	.ross-actions { margin-left: 0; width: 100%; }
	.ross-title { font-size: 20px; }
}

@media (prefers-reduced-motion: reduce) {
	.ross *, .ross-toast { transition: none !important; }
}